<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="false">&times;</span></button>
                <h4 class="modal-title" id="myModalLabel">Modal title</h4>
            </div>
            <div class="modal-body">
                ...
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                <button type="button" class="btn btn-primary">Save changes</button>
            </div>
        </div>
    </div>
</div>

<div class="box-header with-border">
    <h3 class="box-title">Клиент
    </h3>

</div>
    <div class="box-body">

        <?php
        if ($client->id){
            echo Html::button('Сравнить со страхователем', [
                'class' => 'btn btn-primary',
                'onclick' => new JsExpression('
                                (function (e) {
                                    var checked = $("#clientform-clientsameasinsurer");
                                    var insurerPhone = "' . $insurerPhone . '",
                                        insurerName = "' . $insurerName . '",
                                        clientPhone = $("#clientform-phone").val(),
                                        clientName = $("#clientform-name").val();
                                        if (insurerPhone != clientPhone || insurerName != clientName) {
                                            // open modal & pass data
                                            $("#myModal").modal({backdrop: false, show: true});
                                        }
//                                    $("#clientform-phone").attr("readonly", checked).val(checked ? "' . $insurerPhone . '" : "");
//                                    $("#clientform-name").attr("readonly", checked).val(checked ? "' . $insurerName . '" : "");
                               })(event);
                               '),
            ]);